Fig. 1: Workload distribution within teams and relationship with success.

a Median fraction of commits authored by the r-th most active developer of a repository stratified by team size. The most active developer makes more than half of the total number of commits while other developers contribute substantially less, regardless of the size of the team. Median number of stars (b) and downloads (c) as a function of the relative effective team size stratified by team size. The more heterogeneous the workload distribution in the team, the higher the success. The Spearman’s rank test returns p < 0.001 for all team sizes. The number of stars and downloads are incremented by one unit. Error bars range from the 25th to the 75th percentile of the distributions.